//暴露方法
exports.sayHi = function () {
    document.write("<h1>潇君学WebPack</h1>");
}
exports.sayHi1 = function () {
    document.write("<h1>潇君1学WebPack</h1>");
}
exports.sayHi2 = function () {
    document.write("<h1>潇君2学WebPack</h1>");
}
exports.sayHi3 = function () {
    document.write("<h1>潇君3学WebPack</h1>");
}